Pulley-block.



E. H. ARNOLD & W. F. GREATHEAD.

PULLEY BLOCK.

APPLICATION FILED SEPT. 19. I914.

Patented June 6, 1916.

UNITED STATES PATENT OFFICE.

ERNEST H. ARNOLD AND WILLIAM F. GREATHEAD, 0F CLEVELAND, OHIO, ASSIGNORS TO THE OSBORN-CREW MANUFACTURING COMPANY, OF CLEVELAND, OHIO.

PULLEY-BLOGK.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed September 19, 1914. Serial No. 862,555.

GRE.-'\TIIE.=\D, a citizen of the United States,

residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Pulley-Blocks, of which the following is a specification.

This invention relates to pulley blocks, and is characterized bv an improved construction of the pulley wheel, as well as of the casing or block inclosing the same, and has for its object to provide an improved sheet metal block which can be easily constructed and assembled, being particularly illustrated in connection with a double block and wheels supported thereby.

In the accompanying drawings;Figure 1 is a side elevation of a double pulley containing the improvement. Fig. 2 is a plan of the blank from which the block casing is made. Fig. 3 is an elevation of a metal division and locking plate. Fig. 4 is a section of one of the wheels.

Referring specifically to the drawing, Fig. 2 shows the body blank, conveniently stamped from sheet metal and containing two outer sides 6 connected to a top or cross piece 7 which is embossed or grooved as indicated at 8 to strengthen the block and also to receive the upper end of the division plate 9. The side plates, and the division plate are perforated as indicated at 10 to receive the cross pintle or rivet 11 which when headed and assembled clamps the parts together and forms the pintle for the wheels.

The ends of the side plates 6 have projecting tongues 12 which are bent in at the bottom of the block, and are slotted as at 13 to receive tongues 14 on the lower end of the division plate 9. The slots are offset slightly from the median line, and the tongues 14 are inserted through the respective slots and bent over on the inner side, as shown at 15, to lock the parts together and hold the ends of the side and division plates, as shown in Fig. 1. The eye-bolt 0r swivel 16 is set in a suitable hole 17 in the cross or bridge piece at the top of the frame.

Each wheel is made of two sheet metal I sections, stamped or pressed to, proper shape. Each section is curved to form the rim or flange 18. One section has a central opening 19 with a short out-turned flange 20, and the other section has a long or tubular central hub 21 which is pressed or spun inwardly and fits through the opening 19 and flanged over the edge of the flange 20, as indicated at 22, to hold the sections together, and when assembled the pintle 11 passes through the tube 21, giving a lon bearing and large wearing surface, and forming the hub of the wheel. Each of the wheel sections also has two tongues 23 struck up from the web thereof and fitted through appropriate slots in the opposite sections and bent or clenched to form an additional lock between the parts.

As will be seen from the description and drawings, the whole block casing and wheels are formed of sheet metal and may be stamped out at small cost. The hub bearing is long, and integral with one of the wheel sections, which is superior with respect to strength and durability to inserted bearings or edge bearings, and the wheels will run easily and true. The few parts also saves labor in assembly.

The invention is not limited to the exact structure shown and described, but it may be modified in various ways within the scope of the conception.

What we claim as new is:

1. A sheet metal double pulley body comprising a blank bent to form two opposite sides and a top connection therebetween, said sides having slots at the lower ends thereof, a division plate between said sides, having tongues locked into said slots at the bottom, and a pintle between said sides.

2. A sheet metal double pulley body com- In testimony whereof, We aifix our signatures in presence of two Witnesses.

ERNEST H. ARNOLD. WVILLIAM F. GREATHEAD.

Witnesses:

JOHN A. BOMMHARDT, F. M. TAGGETT.

prising a blank bent to form two opposite sides and a top connection, and having inturned tongues at the bottom of said sides, a division plate fitting against said top connection and having tongues at its lower end locked in slots in said first named tongues respectively, and a pintle extending between the sides and through the division plate.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

